Gripping structure of a closure



FIG. 1 is a perspective view of a gripping structure of a closure showing our new design, the lower portion of the closure being illustrated in broken lines for purposes of full disclosure in respect of one form that the bottom portion could have and that forms no part of our claimed design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is a side elevational view thereof. 

The ornamental design for a gripping structure of a closure, as shown and described. 